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Which of the following printer is not usually used in office work? Correct Answer Line printer In computing, a printer is a peripheral machine which makes a persistent representation of graphics or text, usually on paper. While most output is human - readable, bar code printers are an example of an expanded use for printers. The different types of printers include 3D printer, inkjet printer, laser printer, thermal printer, etc.

Explanation:

Which of the following is an output device? Correct Answer Monitor An input device is a hardware component of a computer system that is used to input data and commands into the computer. It allows the user to communicate with the computer and provide instructions for processing data. Some common examples of input devices include keyboards, mice, scanners, digital cameras, microphones, and touchscreens.An output device is a hardware component of a computer system that is used to display or produce the results of the computer's processing. It takes data from the computer and converts it into a human-readable or perceivable form, such as text, images, sound, or video.Some common examples of output devices include monitors, printers, speakers, headphones, projectors, and haptic feedback devices.

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UNIX is a Correct Answer Operating System UNIX is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

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Writing, editing, storing and printing a document using computer software are known as Correct Answer word processing Sometimes abbreviated as WP, a word processor is a software program capable of creating, storing, and printing typed documents. Today, the word processor is one of the most frequently used software programs on a computer, with Microsoft Word being the most popular word processor.

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Which is not related to computers? Correct Answer All are related Byte, Memory, and Ram all are related to computers.

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Which of the following is not an input device? Correct Answer Printer An input device is a hardware component of a computer system that is used to input data and commands into the computer. It allows the user to communicate with the computer and provide instructions for processing data. Some common examples of input devices include keyboards, mice, scanners, digital cameras, microphones, and touchscreens.An output device is a hardware component of a computer system that is used to display or produce the results of the computer's processing. It takes data from the computer and converts it into a human-readable or perceivable form, such as text, images, sound, or video.Some common examples of output devices include monitors, printers, speakers, headphones, projectors, and haptic feedback devices.

Explanation:

IPOS cycle includes Input, Processing, Output and --- Correct Answer Storage The IPOS cycle represents the four basic tasks of any computer: input : Input is obtaining data from the outside world and delivering it to one or more components in the computer. processing : Processing is the execution of one or more computer programs on the data. Processes can vary greatly in size, complexity, and function, i.e. Processes will often perform mathematical operations, string operations, computer graphics, storage operations, and/or operating system activities.

Explanation:

Which one is not in Bangladesh? Correct Answer Babri Masjid ভারতের উত্তর প্রদেশের, ফৈজাবাদ জেলার অযোধ্যা শহরের রামকোট হিলের উপর অবস্থিত একটি প্রাচীন মসজিদ । মুঘল সম্রাট বাবরের আদেশে সেনাপতি মীর বাকী ১৫২৮–২৯ (৯৩৫ হিজরি বর্ষে) এ মসজিদ নির্মাণ করেছিলে। ১৯৯২ সালের ৬ ডিসেম্বর বিশ্ব হিন্দু পরিষদ এবং তাদের সহযোগী সংগঠনের কর্মীরা বাবরি মসজিদ গুড়িয়ে দেয়।

Explanation:

Which one is not a basic colour? Correct Answer Yellow Yellow is the color between orange and green on the spectrum of visible light. It is evoked by light with a dominant wavelength of roughly 570–590 nm. It is a primary color in subtractive color systems, used in painting or color printing.

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What is the metal content in a 2B pencil? Correct Answer Graphite A pencil is an implement for writing or drawing, constructed of a narrow, solid pigment core in a protective casing that prevents the core from being broken or marking the user's hand.

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Which one is not a man made waterway? Correct Answer Strait of Gibraltar Canals are waterways channels, or artificial waterways, for water conveyance, or to service water transport vehicles. They may also help with irrigation. It can be thought of as an artificial version of a river. Canals carry free surface flow under atmospheric pressure.

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Which one is not issued by a commercial bank? Correct Answer B/L A commercial bank is a financial institution which accepts deposits from the public and gives loans for the purposes of consumption and investment to make profit.

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Which one is not a defense Service in Bangladesh? Correct Answer BDR The Border Guard Bangladesh (formerly Bangladesh Rifles) and Bangladesh Coast Guard are under the jurisdiction of the Ministry of Home Affairs during peacetime, but during wartime they fall under the command of Bangladesh Army and Bangladesh Navy respectively.

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A wheel rotates 10 times per minute and moves 20 feet during each rotation. How many feet does the wheel move in 1 hour? Correct Answer 12,000 Number of rotation per hour = 10 x 60 = 600 Movement per hour = 600 x 20 = 12000 ft

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A man has 72 green marbles and 108 red marbles. He decides to pack them into packets of the same size, each containing either all red or all green marbles. What is the greatest number of marbles he can put in each packet? Correct Answer 36 72 = 2 x 2 x 2 x 3 x 3 108 = 2 x 2 x 3 x 3 x 3 Thereore the highest common factor of 72 & 108 is 2 x 2 x 3 x 3 = 36.  So, the greatest number of marbles he can put in each packet is 36.

Explanation:

A boat sails m miles upstream at the rate of r miles per hour. If the rate of the stream is s miles per hour, how long will it take the boat to return to its starting point? Correct Answer m/r+2s Let the speed of the boat in still water be “x” miles/hr. The speed of the stream is given as “s” miles/hr Therefore, Speed of the boat upstream = (x – s) miles/hr ….. (i)   Speed of the boat downstream = (x + s) miles/hr ……. (ii) The distance covered by the boat while sailing upstream is given as  “m” miles Speed of the boat upstream is given as “r” miles/hr …. (iii) From (i) & (iii), we get x - s = r ⇒ x = r + s ….. (iv) Substituting the value of x in eq. (iii), we get Speed of the boat downstream = (r + s + s) miles/hr = (r + 2s) miles/hr ….. (v) Time = distance / speed       = [m / (r + 2s)] hr

Explanation:

3x-1#2x is true for all values of x EXCEPT Correct Answer x=1 Here,  3x - 1 ≠ 2x or,  3x - 2x ≠ 1 or, x ≠ 1. So, the statement x = 1 cannot be true.

Explanation:

A petrol tank that is 1/2 full has 8 gallons petrol removed. The tank is then 1/10 full. What is the capacity, in gallons, of the tank? Correct Answer 20 Petrol removal = 1/2 - 1/10 = 2/5 2/5 of capacity = 8 gallons So,  full capacity = 8 x 5 / 2 =  20 gallons